9876440 has 48 divisors (see below), whose sum is σ = 25855200. Its totient is φ = 3385536.

The previous prime is 9876437. The next prime is 9876469. The reversal of 9876440 is 446789.

It is a happy number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9876394 and 9876403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 560 + ... + 4479.

It is an arithmetic number, because the mean of its divisors is an integer number (538650).

Almost surely, 2^9876440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9876440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12927600).

9876440 is an abundant number, since it is smaller than the sum of its proper divisors (15978760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9876440 is a wasteful number, since it uses less digits than its factorization.

9876440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064 (or 5053 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 9876440 is about 3142.6803846398. The cubic root of 9876440 is about 214.5524492161.

The spelling of 9876440 in words is "nine million, eight hundred seventy-six thousand, four hundred forty".